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  1. bleakarcher

    help with this question :/

    lol just wanted to point it out so the OP doesn't get confused
  2. bleakarcher

    permutation help!

    how awesome..
  3. bleakarcher

    permutation help!

    cool, im gunna begin a second (hopefully successful) attempt at this problem.
  4. bleakarcher

    permutation help!

    YES FUCK!! it gets confusing as shit lol. thanks for teaching me that man. it has actually come in handy.
  5. bleakarcher

    permutation help!

    The answer is 1 995 840 according to my textbook.
  6. bleakarcher

    permutation help!

    I remember attempting this question lol, I was going to explode.
  7. bleakarcher

    Australian Mathematics Competition 2012

    yay, so I was right.
  8. bleakarcher

    Australian Mathematics Competition 2012

    Here is a question from the 2005 paper: The function y=f(x) is a function such that f(f(x))=6x-2005 for all real x. An integer t satisfies the equation f(t)=6t-2005. Find t.
  9. bleakarcher

    Australian Mathematics Competition 2012

    How do you do the questions that ask like how many digits are there in 2^2012?
  10. bleakarcher

    Further trig

    He just screwed up in the latex in the 2nd line, it should be 2cos(3x)cos(2x)-cos(3x)=0
  11. bleakarcher

    Sum

    k/(k+1)!=1/k! - 1/(k+1)! Now just use a telescoping series to simplify sum and obtain 1 - 1/(n+1)! The limit of this is 1.
  12. bleakarcher

    HSC 2012 MX1 Marathon #2 (archive)

    Re: HSC 2012 Marathon :) ^ It all makes sense again..
  13. bleakarcher

    HSC 2012 MX2 Marathon (archive)

    Re: 2012 HSC MX2 Marathon Only if the inequality holds in the domain of integration of course.
  14. bleakarcher

    HSC 2012 MX2 Marathon (archive)

    Re: 2012 HSC MX2 Marathon I know fully comprehend Trebla's comment about you going in the wrong direction.
  15. bleakarcher

    HSC 2012 MX2 Marathon (archive)

    Re: 2012 HSC MX2 Marathon Do you have another good question Trebla?
  16. bleakarcher

    HSC 2012 MX2 Marathon (archive)

    Re: 2012 HSC MX2 Marathon Let f(x)=cos(x)-1+(x^2/2)-(x^4/24) When x=0, f(x)=f(0)=0 f '(x)=-sin(x)+x-(x^3/6) f ''(x)=-cos(x)+1-(x^2/2) f '''(x)=sin(x)-x Note that y=x is the tangent to y=sin(x) at x=0 meaning that x>sin(x) <=> sin(x)-x<0 for all x>0. In order to prove the statement for x>0...
  17. bleakarcher

    Chemistry Practicals

    me too please aerath? thanks
  18. bleakarcher

    Assessment thread.

    fark good job bro. Top 5 in english entension I is awesome.
  19. bleakarcher

    Monks.

    They do nothing if at least 2 monks have blues eyes, if only one monk has blue eyes from the 100 that monk finds out and kills himself?
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